Other reviews have also overviewed AD-related inhibitors; however, most of them focused on some common target enzymes, such as acetylcholinesterase [22,23,24,25], β-secretase [26,27], and glycogen synthase kinase-3 [13], and mainly presented the sources of inhibitors through chemical synthesis, plants, or marine organisms [11,12,13,22,23,24,26,28]. This evidence concerns the gene ACHE and Alzheimer disease.